Abstract

The problem of three-dimensional visualization of a human lens in vivo has been solved by a technique of volume rendering a transformed series of 60 rotated Scheimpflug (a dual slit reflected light microscope) digital images. The data set was obtained by rotating the Scheimpflug camera about the optic axis of the lens in 3 degree increments. The transformed set of optical sections were first aligned to correct for small eye movements, and then rendered into a volume reconstruction with volume rendering computer graphics techniques. To help visualize the distribution of lens opacities (cataracts) in the living, human lens the intensity of light scattering was pseudocolor coded and the cataract opacities were displayed as a movie.

B. R. Masters, S. L. Senft, "Transformation of a set of slices rotated on a common axis to a set of z-slices: application to three-dimensional visualization of the in vivo human lens," Comput. Med. Imag. Graph. 21(3), 145-151 (1997).
[CrossRef]

B. R. Masters, S. L. Senft, "Transformation of a set of slices rotated on a common axis to a set of z-slices: application to three-dimensional visualization of the in vivo human lens," Comput. Med. Imag. Graph. 21(3), 145-151 (1997).
[CrossRef]

Figures (2)

The principle of the Scheimpflug camera. The plane containing the slit beam and the plane containing the image plane meet at one point (S), with the corresponding angles identical. The corresponding angles are the angles between the objective plane, which contains the camera objective (L), and the planes containing the slit beam and the image. A Scheimpflug image of the ocular lens is formed in the image plane by the camera objective.